Move the checkout step below the download action

This allows us to test the inlined download action as it would be used
when the action is used in a different repository.

Author: rvermeulen

.github/workflows/test-create-bundle.yml

@@ -7,12 +7,12 @@ jobs:
     name: "Create custom bundle"
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
       - uses: advanced-security/codeql-bundle-action/download-bundle@v2
         id: download-bundle
         with:
           tag: "latest"
           platforms: "osx64,linux64,win64"
+      - uses: actions/checkout@v3
       - uses: advanced-security/codeql-bundle-action/create-bundle@v2
         id: create-bundle
         with: